Rinnai RSC199i Installation And Operation Manual page 38

Concentric Pipe: Installation
Instructions
1. Remove and discard screw from concentric
flue connection.
Figure 26
2. Remove exhaust adapter ring (discard for
concentric venting configurations.)
Figure 27
3. Install the concentric vent. Ensure it is properly
seated.
Concentric
Figure 28
4. Secure the vent pipe to the concentric flue
connection with the supplied screw.
Figure 29
IMPORTANT
Install the venting termination according to the
diagrams and instructions in this manual. Slope
the venting 1/4 in. per foot toward the appliance
according to the vent manufacturer's installation
instructions. Dispose of condensate per local
codes.
38
Vent
Rinnai Tankless Water Heater Installation and Operation Manual
Mount Concentric Pipe Through Wall
If venting through an exterior wall, align the wall
mounting bracket template (located in literature
bag) to the wall and follow instructions on the
template for appropriate vent hole location. Use
a level to make sure the wall mounting bracket is
even and level.
Wall Mounting
Bracket Template
Level
Wall Mounting
Bracket
Table 14: Concentric Pipe: Vent Applications
Horizontal Wall Terminations
2 in. x 4 in.
3 in. x 5 in.
Table 15: Concentric Pipe: Maximum Vent Length
Concentric Vent Maximum Equivalent Length
Vent Sizes 2 in. x 4 in.
Vent Lengths 65 ft (20 m)
• 45° elbow is equivalent to 3 ft (1 m)
• 90° elbow is equivalent to 6 ft (2 m)
Figure 30
Vertical Roof
Terminations
2 in. x 4 in.
and
3 in. x 5 in.
3 in. x 5 in.
150 ft (46 m)